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Definitions

underwater

[uhn-der-waw-ter, -wot-er] / ˈʌn dərˈwɔ tər, -ˈwɒt ər /
ADJECTIVE
under the water's surface
Synonyms


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The NGO is hoping to plant 36 hectares of coral by 2030, which scientific director Diana Tarazona calls reviving "underwater cities."

From Barron's • May 7, 2026

The other type of tsunamis happen in the open ocean and are directly triggered by earthquakes, or occasionally other powerful events such as underwater volcanoes.

From BBC • May 6, 2026

Study suggests two underwater faults could each generate 7.1 quakes, swamping areas near shore with 30-foot waves.

From Los Angeles Times • May 4, 2026

In some areas prices have slipped, leaving some owners underwater.

From The Wall Street Journal • May 2, 2026

Since its invention, one of the most important uses of sonar, particularly the underwater ocean tool known as side-scan sonar, is its use in locating sunken ships and artifacts that lie within and around them.

From "Shipwrecked!" by Martin W. Sandler